<![CDATA[Students often experience difficulty visualizing three-dimensional objects and translating geometric representations into mathematical procedures in polyhedral geometry. This study aimed to develop and initially evaluate a set of Problem-Based Learning worksheets integrating GeoGebra Augmented Reality and Pólya’s problem-solving stages. The study employed a research and development design based on the analysis, design, development, implementation, and evaluation phases of the ADDIE model. Three experts appraised the worksheets, while 30 eighth-grade students from a public junior high school in Palembang, Indonesia, participated in the implementation. Data were collected through expert review, classroom observations, student-response questionnaires, a post-implementation mathematical problem-solving test, and semi-structured interviews. The worksheets obtained an average expert-appraisal score of 85.5%, comprising 86% for content, 90% for construct, 80% for language, and 86% for AR media design. Student responses were generally positive, particularly toward GeoGebra AR visualization, which reached 97%, while responses to PBL-related guidance ranged from 76% to 90%. Based on the post-implementation test, 30% of students were classified in the high category, 47% in the medium category, and 23% in the low category. These results provide initial evidence that the worksheets were considered appropriate by experts and positively received by students.]]>
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